Noise, ISO 1600, raw vs. JPEG

You can really see the artifacts of the default JPEG settings at ISO 1600, where detail in some areas is almost completely gone. If you're willing to trade off a slightly grainier look, though, the ISO 1600 shots may be quite usable when processed as raw.

Sharpness

Overall, the lens/camera system can deliver nicely sharp photos, but small details can start too look a little oversharpened. Look, for example, at the schmutz on the green parts of the daisy. However, you'll probably only notice it if you display the images at full size, and this type of sharpening will deliver photos that are good for printing.

Color

Low-light white balance

The E-PL3 offers you the choice of how you want the low-light auto white balance to render the colors; corrected, as on the left, or preserving the warm tone conferred by indoor lights, as on the right.